Question

class 9th .
Define force of friction.​

Answer 1

Explanation:

The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object.

Answer 2

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Explanation:

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